Ageotropic Horizontal Positional Nystagmus

BPPV is a common disorder, typically easily treated once identified.  The vast majority (over 90%) of cases of BPPV involve free floating debris in the posterior canal on one side. These types of BPPV responds well to the Epley maneuver. There are other, less common and less easily-treated variants of BPPV. Occasionally, the debris will…

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anterior bppv vertigo

Anterior Canal BPPV

Anterior canal BPPV is quite rare, and is estimated to account for 1 to 2% of cases of BPPV. The primary diagnostic feature is the fact that the nystagmus associated with anterior canal BPPV is torsional and downbeating, whereas the more common posterior canal BPPV nystagmus is torsional and upbeating. This is not always easy…

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